i've not noticed any particular slow down, though the site is busier than normal as we've received some publicity via asp.net (which also shows up in the start page of the various visual studio products). We are looking to expand out our hardware setup, as the traffic has scaled up from approximately 2 million page views a month to 5 million page views a month recently.

You can get an idea of the recent activity, by looking at the panel in the bottom left of the homepage, where a number of details are (heres a snapshot from today)

Google PageRank
>> 8

Pageviews Last 30 Days
>> 4,800,493

Downloads Yesterday
>> 2,797

SourceForge® Rankings
>> 9th  [Traffic]
>> 56th  [Downloads]